Water heater or boiler.



J. W. GALLAGHER.

WATER HEATER 0R BOILER.

APPLICATION FILED MAR.16, 1914.

1,122,381 Patented Dec. 29, 1914.

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WATER HEATER OR BOILER. i a "i Specification of Letters Patent.

Patented Dec. 29, 1914.

Application filed March 16, 1914. Serial No. 824,953.

2' '0 all whom it may concern:

Be it known that I, JOHN W. GALLAGHER, a citizen of the United States, residing at Seneca Falls, in the county of Seneca and tate of New York, have invented certain new and useful Improvements in Water Heaters or Boilers, of which the following is a specification.

My invention relates to improvements in water heaters or boilers, preferably of the horizontal type, and has for one of its objects the provision of apparatus of the above mentioned character, whereby the maximum degree of heat will be imparted to the water, from the consumption of a given amount of uel.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming. a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a central vertical longitudinal sectional view through a boiler embodying my invention, and, Fig. 2 is a transverse vertical sectional view taken on line 22 of Fig. 1.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates an outer casing, formed of suitable material, and provided upon its bottom with a transverse upstanding projection or flange 6, forming an ash-pit 7 and a space or passage 8, as shown. The opening of the ashpit is normally closed by a door 9. The top of the ash-pit is covered by a grate 10, of any well known or preferred type.

Arranged above and adjacent the grate 10, within the outer casing 5, is a doublewalled preferably horizontal fire-box 11, having its top and bottom formed open, as shown. This fire-box has its outer'end provided with an opening 12, for registration with a fuel supply opening 13, normally closed by a door 14. The inner end of the double-walled fire-box 11 is in free communication with an upstanding boiler-shell 15, preferably cast integral therewith. This boiler-shell is divided by a longitudinally extending vertical passage 16 into spaced vertical arms 17 and 18, the arm 18 having free communication with a horizontally arranged double-walled casing 19, having its top and bottom open, so that the products of combustion or heated gases pass therethrough when discharging from the lower end of the vertical passage 16, such roducts of combustion finally passing out of the outer casing 5, through a stack 20. The products of combustion pass into the upper end of the passage 16 through a passage 21, as shown.

Disposed above the fire-box 11, are horizontal longitudinal and transverse waterpipes 22 and 23 which are connected with the double-walled fire-box 11 and in free communication with the interior thereof, as shown. The inner ends of the horizontal Water-pipes 22 are connected with the arm 17 of the boiler-shell 15, as shown. Disposed upon the opposite side of the boilershell 15 are horizontal longitudinally extending water-pipes 24, connected with the arm 18 and in free communication therewith. The opposite or outer ends of the water-pipes 24 are connected with the water casing 19, as shown.

Arranged upon opposite sides of the boiler-shell 15, and above the horizontal and transverse Water-pipes 22, 23 and 24, are horizontal pairs of water-pipes 25 and 26, secured to the boiler-shell 15 and having free communication with the interior thereof, as shown. The outer ends of the waterpipes 25 and 26 in each pair, are-connected by elbows 27 or the like, such pairs of water-pipes being preferably arranged in a staggered relation to cause the ascending heated gases or products of combustion to travel in an irregular or tortuous path therebetween, as is obvious. The upper end of the boiler-shell 15 may serve as a steam dome, and a steam outlet pipe 28 is connected with the upper portion thereof, as shown. The water is preferably originally fed into the double-walled firebox 11 through inlet pipe 29, provided with cut ofi' valve, not shown. This water fills the entire apparatus, including casing 19, which may also be provided with water'inlet pipe or pipes, if desired.

In the operation of the apparatus, the products of combustion pass from the firebox 11 upwardly around or about the waterpipes 22 and 23, between water-pipes 25, through passage 21, vertical passage 16 of the boiler-shell 15, through space 8, through casing 19, between water-pipes 24, and between water-pipes 26 to be finally discharged through stack 29. In this manner the passage of the products of combustion or heated gases through the outer shell 5 is prolonged, and the maximum area of the parts containing the water are exposed to be heated by the products of combustion, for such period. i

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subj oined claims.

Having described my invention, I claim 1. In a water heater or boiler, an outer shell, a double-walled fire-box arranged therein and open at its top,cand an up standing boiler-shell arranged within the outer shell, having communication with the donble-i'valled fire-box and provided with a longitudinal passage having an upper inlet and a lower outlet.

2. In a water heater or boiler, an outer shell, an approximately horizontal doublewalled fire-box arranged therein and open at its top, an approximately horizontal double-walled water casing arranged within the outer shell in end to end relation to the fire-box, and an upstanding boiler-shell disposed between the fire-box and water casing and having a longitudinal passage provided with an inlet opening above the fire-box and an outlet opening discharging below the water casing.

3. In a water heater or boiler, an outer shell, an approximately horizontal doublewalled fire-box arranged therein and open at its top, an approximately horizontal double-walled water casing arranged within the outer shell in end to end relation to the firebox and open at its top, water-pipes arranged above the fire-box and water casing and connected therewith, and an upstanding boiler-shell disposed between the firebox and water casing, in communication therewith, and having a longitudinal passage provided with an inlet opening above the fire-box and an outlet opening discharging below the fire-box.

at. I11 a water heater or boiler, an approximately horizontal double-walled fire-box, an outer shell containing the same, an approximately horizontal. double-walled water casing arranged within the outer shell in end to end relation to the fire-box, water-pipes arranged above the firebox and outer casing and connected therewith, an upstanding boiler-shell having communication with the fire-box and water casing and provided with a longitudinal passage having an inlet opening arranged above the fire-box and an outlet opening discharging below the water casing, and water-pipes connected with the upstanding boiler-sl'iell and arranged in staggered pairs.

In testimony whereof I aliix my signature in presence of two witnesses.

JOHN W. GALLAGHER.

Witnesses:

WILLIAM H. IIURLEY, Looms S. HULBURD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents,

Washington, D. 0. 

